Concept:Identifying the author of the book Swachh Bharat Revolution from the given options.Explanation:The book Swachh Bharat Revolution was written by Parameswaran Iyer.He was the Secretary of the Ministry of Jal Shakti when the book was published.The book was released in 2019 and focuses on the Swachh Bharat Mission.Parameswaran Iyer later served as the CEO of NITI Aayog from July 2022.Answer:The correct option is C: Parameswaran Iyer.